/**
 * @fileoverview Test data for float encoding and decoding.
 */
goog.module('protobuf.binary.floatTestPairs');

const BufferDecoder = goog.require('protobuf.binary.BufferDecoder');
const {createBufferDecoder} = goog.require('protobuf.binary.bufferDecoderHelper');

/**
 * An array of Pairs of float values and their bit representation.
 * This is used to test encoding and decoding from/to the protobuf wire format.
 * @return {!Array<{name: string, floatValue:number, bufferDecoder:
 *     !BufferDecoder}>}
 */
function getFloatPairs() {
    const floatPairs = [
        {
            name: 'zero',
            floatValue: 0,
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0x00, 0x00),
        },
        {
            name: 'minus zero',
            floatValue: -0,
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0x00, 0x80)
        },
        {
            name: 'one ',
            floatValue: 1,
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0x80, 0x3F)
        },
        {
            name: 'minus one',
            floatValue: -1,
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0x80, 0xBF)
        },
        {
            name: 'two',
            floatValue: 2,
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0x00, 0x40)
        },
        {
            name: 'max float32',
            floatValue: Math.pow(2, 127) * (2 - 1 / Math.pow(2, 23)),
            bufferDecoder: createBufferDecoder(0xFF, 0xFF, 0x7F, 0x7F)
        },

        {
            name: 'min float32',
            floatValue: 1 / Math.pow(2, 127 - 1),
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0x80, 0x00)
        },

        {
            name: 'Infinity',
            floatValue: Infinity,
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0x80, 0x7F)
        },
        {
            name: 'minus Infinity',
            floatValue: -Infinity,
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0x80, 0xFF)
        },
        {
            name: '1.5',
            floatValue: 1.5,
            bufferDecoder: createBufferDecoder(0x00, 0x00, 0xC0, 0x3F)
        },
        {
            name: '1.6',
            floatValue: 1.6,
            bufferDecoder: createBufferDecoder(0xCD, 0xCC, 0xCC, 0x3F)
        },
    ];
    return [...floatPairs];
}

exports = {getFloatPairs};
